*{
    margin:0px;
    padding:0px;
}
li{
    width:85%;
    height:100px;
    font-family: sans-serif;
    font-size:16px;
    line-height:40px;
    padding:20px;
}
.container{
    width:100%;
    height:50px;
    text-align: center;
    color:blue;
    background-color: silver;
    margin-top:10px;
}
.body{
    width:75%;
    height:1300px;
    margin:20px auto;
    background-color: aliceblue;
}
.part1{
    width:100%;
    height:400px;
}
.part2{
    width:100%;
    height:400px;
}
.part3{
    width:100%;
    height:400px;
}
.footing{
    width:100%;
    height:50px;
    padding:10px;
    background-color: darkgrey;
}

